Seagate

Seagate ST500LT012 Laptop Thin 500GB 2.5" Internal Hard Drive

4.5 (2568 reviews)

The Seagate Laptop Thin ST500LT012 packs 500GB of storage into an ultra-slim 7mm form factor built for thin laptops and ultrabooks.

$49.00*
In Stock on Amazon.com
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*Price sourced from Amazon.com. Last updated:Jun 04, 2026.Price and availability are subject to change.

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Overview

The Seagate Laptop Thin ST500LT012 is a 2.5-inch internal hard drive engineered for thin and light laptop designs. At just 7mm tall, it fits into ultrabook bays and slim notebook enclosures that cannot accommodate the standard 9.5mm drive height. The 500GB capacity provides a reasonable amount of storage for documents, photos, and everyday files, making it a practical option when an SSD of equivalent capacity is not in the budget or when a system specifically requires a mechanical drive.

Performance is consistent with what you would expect from a 5400 RPM drive on a SATA 3Gb/s interface — adequate for sequential file access and general storage duties, but noticeably slower than SSDs for random read/write operations, boot times, and application loading. The 16MB cache helps buffer data during sustained transfers. Seagate's SmartAlign technology is a useful inclusion, handling Advanced Format 4K sector alignment transparently so the drive works correctly without manual partition alignment or additional software. For users upgrading an older thin laptop or building a budget storage solution where physical dimensions are a constraint, the ST500LT012 fills a specific and practical role.

Key Features

7mm z-height form factor enables thin chassis design for all segments of laptop computing.

Specifications

Brand
Seagate
Model
ST500LT012
Capacity
500 GB
Spindle Speed
5400 RPM
Interface
SATA 3Gb/s
Cache
16 MB
Form Factor
2.5-Inch
Z-Height
7mm

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Pros & Cons

👍 Pros

  • 7mm z-height fits thin laptops and ultrabooks where standard 9.5mm drives will not
  • 500GB capacity provides significantly more storage than comparably priced small SSDs
  • SmartAlign technology handles 4K sector alignment automatically, simplifying installation
  • 16MB cache buffer helps smooth out read and write operations during sequential access

👎 Cons

  • 5400 RPM spindle speed is slow compared to 7200 RPM drives and dramatically slower than SSDs
  • SATA 3Gb/s interface caps maximum throughput at 300 MB/s, half the bandwidth of SATA III
  • As a mechanical drive, it is more susceptible to damage from drops and vibration than solid-state storage
  • 500GB capacity is modest for users who need to store large media libraries or project files

Frequently Asked Questions

The ST500LT012 has a 7mm z-height, which is thinner than the standard 9.5mm laptop drives. This makes it compatible with ultrabooks and thin laptop designs that cannot accommodate thicker drives.
It uses a SATA 3Gb/s (SATA II) interface, which is compatible with SATA III ports as well since SATA is backward compatible.
SmartAlign is Seagate's technology that simplifies the transition to Advanced Format 4K sectors. It allows the drive to handle sector alignment automatically without requiring special software or manual configuration during installation.
It can function as a boot drive, but at 5400 RPM with a SATA 3Gb/s interface it will be noticeably slower than an SSD for booting and loading applications. It is better suited for secondary storage where capacity matters more than speed.